I have a tabby cat, a creature most of us think of as ordinary. Sometimes I gaze at the symmetrical design on the top of her head, and I ask myself, "How does DNA do that?"

We've figured out that DNA codes for proteins, and that's amazing. But how do all the liver proteins wind up together, creating a liver, and how do all the cornea proteins wind up over the eyes? And how do the gray hairs and black hairs arrange themselves into a Rorschach design on my cat's head?

There are more things in heaven and earth than our dreamt of in our philosophy.